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Size bms for battery pack
#1
Hi everyone I'm new to the whole battery pack building but I would like to know what BMS to use for size of battery pack I've seen some people build 7s 80p battery packs with 100 amp BMS and other people say I need to use the discharge current amps of the size of the bms.
So the calculating for a 7s 80p discharge current is 560 amps

So why is the guy have a 100 amp bms

Please help
Skilis777
South Africa
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#2
(10-22-2020, 02:09 PM)SKILIS777 Wrote: Hi everyone I'm new to the whole battery pack building but I would like to know what BMS to use for size of battery pack I've seen some people build 7s 80p battery packs with 100 amp BMS and other people say I need to use the discharge  current amps of the size of the bms.
So the calculating for a 7s 80p discharge current is 560 amps

So why is the guy have a 100 amp bms

Please help
Skilis777
South Africa
One application may need 100% of max battery amps and another only 30% of the max battery amps.    You size the BMS for the max amps you will draw from the battery - not what the battery can deliver.   For example, my battery bank can deliver 3 times the max amps that my inverter can pull (before it would blow up) so I size my BMS for my max inverter pull  Smile
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